package com.hmdp.service.impl;

import cn.hutool.core.bean.BeanUtil;
import cn.hutool.core.bean.copier.CopyOptions;
import cn.hutool.core.lang.UUID;
import cn.hutool.core.util.RandomUtil;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.hmdp.dto.LoginFormDTO;
import com.hmdp.dto.Result;
import com.hmdp.dto.UserDTO;
import com.hmdp.entity.User;
import com.hmdp.mapper.UserMapper;
import com.hmdp.service.IUserService;
import com.hmdp.utils.RedisConstants;
import com.hmdp.utils.RegexUtils;
import com.hmdp.utils.SystemConstants;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.http.HttpRequest;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;

import java.util.HashMap;
import java.util.Map;
import java.util.concurrent.TimeUnit;

import static com.hmdp.utils.RedisConstants.*;

/**
 * <p>
 * 服务实现类
 * </p>
 *
 * @author 虎哥
 * @since 2021-12-22
 */
@Service
@Slf4j
public class UserServiceImpl extends ServiceImpl<UserMapper, User> implements IUserService {

    @Resource
    private StringRedisTemplate stringRedisTemplate;
    @Qualifier("redisTemplate")


    @Override
    public Result sendCode(String phone, HttpSession session) {
        if (RegexUtils.isPhoneInvalid(phone)) {
            return Result.fail("手机号格式错误");
        }
        String code = RandomUtil.randomNumbers(6);
        //保存验证码到redis
        stringRedisTemplate.opsForValue().set(LOGIN_CODE_KEY + phone,code,LOGIN_CODE_TTL, TimeUnit.MINUTES);
        //发送验证码
        log.info("验证码: {}", code);
//        session.setAttribute("code", code);

        return Result.ok();
    }

    @Override
    public Result login(LoginFormDTO loginForm, HttpServletRequest request) {

        if (RegexUtils.isPhoneInvalid(loginForm.getPhone())) {
            return Result.fail("手机号格式错误");
        }
        if (loginForm.getPhone() == null || !loginForm.getCode().equals(stringRedisTemplate.opsForValue().get(LOGIN_CODE_KEY + loginForm.getPhone())) ) {
            return Result.fail("验证码有误");
        }
        User user = query().eq("phone", loginForm.getPhone()).one();
        if (user == null) {

            user=createUserWithPhone(loginForm.getPhone());
        }
        String token = request.getHeader("authorization");
        if (token == null ||stringRedisTemplate.opsForHash().entries(token).isEmpty()) {
            String newToken = UUID.randomUUID().toString(true);
            UserDTO userDTO = new UserDTO();
            BeanUtils.copyProperties(user,userDTO);


            Map<String, Object> userMap = BeanUtil.beanToMap(userDTO,new HashMap<>(), CopyOptions.create().setFieldValueEditor((fieldName,fieldValue)->fieldValue.toString()));
            String key = LOGIN_USER_KEY + newToken;
            stringRedisTemplate.opsForHash().putAll(key, userMap);
            //设置token有效期
            stringRedisTemplate.expire(key,LOGIN_USER_TTL, TimeUnit.MINUTES);
            return Result.ok(newToken);
        }

            //session.setAttribute("user",userDTO);
        return Result.ok(token);

    }

    private User createUserWithPhone(String phone) {
        User user = new User();
        user.setPhone(phone);
        user.setNickName(SystemConstants.USER_NICK_NAME_PREFIX + RandomUtil.randomNumbers(10));
        save(user);
        return user;
    }

}
